osip.c

嵌入式产品中的osip的源代码.

osip_ict_execute (osip_t * osip)
{
  osip_transaction_t *transaction;
  osip_event_t *se;
  int more_event;
  int tr;

  tr = 0;
  while (!osip_list_eol (osip->osip_ict_transactions, tr))
    {
      transaction = osip_list_get (osip->osip_ict_transactions, tr);
      tr++;
      more_event = 1;
      do
	{
	  se = (osip_event_t *) osip_fifo_tryget (transaction->transactionff);
	  if (se == NULL)	/* no more event for this transaction */
	    more_event = 0;
	  else
	    osip_transaction_execute (transaction, se);
	}
      while (more_event == 1);
    }
  return 0;
}

int
osip_ist_execute (osip_t * osip)
{
  osip_transaction_t *transaction;
  osip_event_t *se;
  int more_event;
  int tr;

  tr = 0;
  while (!osip_list_eol (osip->osip_ist_transactions, tr))
    {
      transaction = osip_list_get (osip->osip_ist_transactions, tr);
      tr++;
      more_event = 1;
      do
	{
	  se = (osip_event_t *) osip_fifo_tryget (transaction->transactionff);
	  if (se == NULL)	/* no more event for this transaction */
	    more_event = 0;
	  else
	    osip_transaction_execute (transaction, se);
	}
      while (more_event == 1);
    }
  return 0;
}

int
osip_nict_execute (osip_t * osip)
{
  osip_transaction_t *transaction;
  osip_event_t *se;
  int more_event;
  int tr;

  tr = 0;
  while (!osip_list_eol (osip->osip_nict_transactions, tr))
    {
      transaction = osip_list_get (osip->osip_nict_transactions, tr);
      tr++;
      more_event = 1;
      do
	{
	  se = (osip_event_t *) osip_fifo_tryget (transaction->transactionff);
	  if (se == NULL)	/* no more event for this transaction */
	    more_event = 0;
	  else
	    osip_transaction_execute (transaction, se);
	}
      while (more_event == 1);
    }
  return 0;
}

int
osip_nist_execute (osip_t * osip)
{
  osip_transaction_t *transaction;
  osip_event_t *se;
  int more_event;
  int tr;

  tr = 0;
  while (!osip_list_eol (osip->osip_nist_transactions, tr))
    {
      transaction = osip_list_get (osip->osip_nist_transactions, tr);
      tr++;
      more_event = 1;
      do
	{
	  se = (osip_event_t *) osip_fifo_tryget (transaction->transactionff);
	  if (se == NULL)	/* no more event for this transaction */
	    more_event = 0;
	  else
	    osip_transaction_execute (transaction, se);
	}
      while (more_event == 1);
    }
  return 0;
}

void
osip_timers_gettimeout (osip_t * osip, struct timeval *lower_tv)
{
  struct timeval now;
  osip_transaction_t *tr;
  int pos = 0;

  gettimeofday (&now, NULL);
  lower_tv->tv_sec = now.tv_sec + 3600 * 24 * 265;	/* wake up evry year :-) */
  lower_tv->tv_usec = now.tv_usec;

#ifdef OSIP_MT
  osip_mutex_lock (ict_fastmutex);
#endif
  /* handle ict timers */
  while (!osip_list_eol (osip->osip_ict_transactions, pos))
    {
      tr =
	(osip_transaction_t *) osip_list_get (osip->osip_ict_transactions,
					      pos);

      if (1 <= osip_fifo_size (tr->transactionff))
	{
	  OSIP_TRACE (osip_trace
		      (__FILE__, __LINE__, OSIP_INFO4, NULL,
		       "1 Pending event already in transaction !\n"));
	  lower_tv->tv_sec = 0;
	  lower_tv->tv_usec = 0;
#ifdef OSIP_MT
	  osip_mutex_unlock (ict_fastmutex);
#endif
	  return;
	}
      else
	{
	  if (tr->state == ICT_CALLING)
	    min_timercmp (lower_tv, &tr->ict_context->timer_b_start);
	  if (tr->state == ICT_CALLING)
	    min_timercmp (lower_tv, &tr->ict_context->timer_a_start);
	  if (tr->state == ICT_COMPLETED)
	    min_timercmp (lower_tv, &tr->ict_context->timer_d_start);
	  if (timercmp (&now, lower_tv, >))
	    {
	      lower_tv->tv_sec = 0;
	      lower_tv->tv_usec = 0;
#ifdef OSIP_MT
	      osip_mutex_unlock (ict_fastmutex);
#endif
	      return;
	    }
	}
      pos++;
    }
#ifdef OSIP_MT
  osip_mutex_unlock (ict_fastmutex);
#endif

#ifdef OSIP_MT
  osip_mutex_lock (ist_fastmutex);
#endif
  /* handle ist timers */
  while (!osip_list_eol (osip->osip_ist_transactions, pos))
    {
      tr =
	(osip_transaction_t *) osip_list_get (osip->osip_ist_transactions,
					      pos);

      if (tr->state == IST_CONFIRMED)
	min_timercmp (lower_tv, &tr->ist_context->timer_i_start);
      if (tr->state == IST_COMPLETED)
	min_timercmp (lower_tv, &tr->ist_context->timer_h_start);
      if (tr->state == IST_COMPLETED)
	min_timercmp (lower_tv, &tr->ist_context->timer_g_start);
      if (timercmp (&now, lower_tv, >))
	{
	  lower_tv->tv_sec = 0;
	  lower_tv->tv_usec = 0;
#ifdef OSIP_MT
	  osip_mutex_unlock (ist_fastmutex);
#endif
	  return;
	}
      pos++;
    }
#ifdef OSIP_MT
  osip_mutex_unlock (ist_fastmutex);
#endif

#ifdef OSIP_MT
  osip_mutex_lock (nict_fastmutex);
#endif
  /* handle nict timers */
  while (!osip_list_eol (osip->osip_nict_transactions, pos))
    {
      tr =
	(osip_transaction_t *) osip_list_get (osip->osip_nict_transactions,
					      pos);

      if (tr->state == NICT_COMPLETED)
	min_timercmp (lower_tv, &tr->nict_context->timer_k_start);
      if (tr->state == NICT_PROCEEDING || tr->state == NICT_TRYING)
	min_timercmp (lower_tv, &tr->nict_context->timer_f_start);
      if (tr->state == NICT_PROCEEDING || tr->state == NICT_TRYING)
	min_timercmp (lower_tv, &tr->nict_context->timer_e_start);
      if (timercmp (&now, lower_tv, >))
	{
	  lower_tv->tv_sec = 0;
	  lower_tv->tv_usec = 0;
#ifdef OSIP_MT
	  osip_mutex_unlock (nict_fastmutex);
#endif
	  return;
	}
      pos++;
    }
#ifdef OSIP_MT
  osip_mutex_unlock (nict_fastmutex);
#endif

#ifdef OSIP_MT
  osip_mutex_lock (nist_fastmutex);
#endif
  /* handle nist timers */
  while (!osip_list_eol (osip->osip_nist_transactions, pos))
    {
      tr =
	(osip_transaction_t *) osip_list_get (osip->osip_nist_transactions,
					      pos);

      if (tr->state == NIST_COMPLETED)
	min_timercmp (lower_tv, &tr->nist_context->timer_j_start);
      if (timercmp (&now, lower_tv, >))
	{
	  lower_tv->tv_sec = 0;
	  lower_tv->tv_usec = 0;
#ifdef OSIP_MT
	  osip_mutex_unlock (nist_fastmutex);
#endif
	  return;
	}
      pos++;
    }
#ifdef OSIP_MT
  osip_mutex_unlock (nist_fastmutex);
#endif

  lower_tv->tv_sec = lower_tv->tv_sec - now.tv_sec;
  lower_tv->tv_usec = lower_tv->tv_usec - now.tv_usec;

  /* just make sure the value is correct! */
  if (lower_tv->tv_usec < 0)
    {
      lower_tv->tv_usec = lower_tv->tv_usec + 1000000;
      lower_tv->tv_sec--;
    }
  if (lower_tv->tv_sec < 0)
    {
      lower_tv->tv_sec = 0;
      lower_tv->tv_usec = 0;
    }
  if (lower_tv->tv_usec > 1000000)
    {
      lower_tv->tv_usec = lower_tv->tv_usec - 1000000;
      lower_tv->tv_sec++;
    }
  return;
}

void
osip_timers_ict_execute (osip_t * osip)
{
  osip_transaction_t *tr;
  int pos = 0;

#ifdef OSIP_MT
  osip_mutex_lock (ict_fastmutex);
#endif
  /* handle ict timers */
  while (!osip_list_eol (osip->osip_ict_transactions, pos))
    {
      osip_event_t *evt;

      tr =
	(osip_transaction_t *) osip_list_get (osip->osip_ict_transactions,
					      pos);

      if (1 <= osip_fifo_size (tr->transactionff))
	{
	  OSIP_TRACE (osip_trace
		      (__FILE__, __LINE__, OSIP_INFO4, NULL,
		       "1 Pending event already in transaction !\n"));
	}
      else
	{
	  evt = __osip_ict_need_timer_b_event (tr->ict_context, tr->state,
					       tr->transactionid);
	  if (evt != NULL)
	    osip_fifo_add (tr->transactionff, evt);
	  else
	    {
	      evt = __osip_ict_need_timer_a_event (tr->ict_context, tr->state,
						   tr->transactionid);
	      if (evt != NULL)
		osip_fifo_add (tr->transactionff, evt);
	      else
		{
		  evt =
		    __osip_ict_need_timer_d_event (tr->ict_context, tr->state,
						   tr->transactionid);
		  if (evt != NULL)
		    osip_fifo_add (tr->transactionff, evt);
		}
	    }
	}
      pos++;
    }
#ifdef OSIP_MT
  osip_mutex_unlock (ict_fastmutex);
#endif
}

void
osip_timers_ist_execute (osip_t * osip)
{
  osip_transaction_t *tr;
  int pos = 0;

#ifdef OSIP_MT
  osip_mutex_lock (ist_fastmutex);
#endif
  /* handle ist timers */
  while (!osip_list_eol (osip->osip_ist_transactions, pos))
    {
      osip_event_t *evt;

      tr =
	(osip_transaction_t *) osip_list_get (osip->osip_ist_transactions,
					      pos);

      evt = __osip_ist_need_timer_i_event (tr->ist_context, tr->state,
					   tr->transactionid);
      if (evt != NULL)
	osip_fifo_add (tr->transactionff, evt);
      else
	{
	  evt = __osip_ist_need_timer_h_event (tr->ist_context, tr->state,
					       tr->transactionid);
	  if (evt != NULL)
	    osip_fifo_add (tr->transactionff, evt);
	  else
	    {
	      evt = __osip_ist_need_timer_g_event (tr->ist_context, tr->state,
						   tr->transactionid);
	      if (evt != NULL)
		osip_fifo_add (tr->transactionff, evt);
	    }
	}
      pos++;
    }
#ifdef OSIP_MT
  osip_mutex_unlock (ist_fastmutex);
#endif
}

void
osip_timers_nict_execute (osip_t * osip)
{
  osip_transaction_t *tr;
  int pos = 0;

#ifdef OSIP_MT
  osip_mutex_lock (nict_fastmutex);
#endif
  /* handle nict timers */
  while (!osip_list_eol (osip->osip_nict_transactions, pos))
    {
      osip_event_t *evt;

      tr =
	(osip_transaction_t *) osip_list_get (osip->osip_nict_transactions,
					      pos);

      evt = __osip_nict_need_timer_k_event (tr->nict_context, tr->state,
					    tr->transactionid);
      if (evt != NULL)
	osip_fifo_add (tr->transactionff, evt);
      else
	{
	  evt = __osip_nict_need_timer_f_event (tr->nict_context, tr->state,
						tr->transactionid);
	  if (evt != NULL)
	    osip_fifo_add (tr->transactionff, evt);
	  else
	    {
	      evt =
		__osip_nict_need_timer_e_event (tr->nict_context, tr->state,
						tr->transactionid);
	      if (evt != NULL)
		osip_fifo_add (tr->transactionff, evt);
	    }
	}
      pos++;
    }
#ifdef OSIP_MT
  osip_mutex_unlock (nict_fastmutex);
#endif
}


void
osip_timers_nist_execute (osip_t * osip)
{
  osip_transaction_t *tr;
  int pos = 0;

#ifdef OSIP_MT
  osip_mutex_lock (nist_fastmutex);
#endif
  /* handle nist timers */
  while (!osip_list_eol (osip->osip_nist_transactions, pos))
    {
      osip_event_t *evt;

      tr =
	(osip_transaction_t *) osip_list_get (osip->osip_nist_transactions,
					      pos);

      evt = __osip_nist_need_timer_j_event (tr->nist_context, tr->state,
					    tr->transactionid);
      if (evt != NULL)
	osip_fifo_add (tr->transactionff, evt);
      pos++;
    }
#ifdef OSIP_MT
  osip_mutex_unlock (nist_fastmutex);
#endif
}

void
osip_set_cb_send_message (osip_t * cf,
			  int (*cb) (osip_transaction_t *, osip_message_t *,
				     char *, int, int))
{
  cf->cb_send_message = cb;
}

void
__osip_message_callback (int type, osip_transaction_t * tr,
			 osip_message_t * msg)
{
  osip_t *config = tr->config;

  if (type >= OSIP_MESSAGE_CALLBACK_COUNT)
    {
      OSIP_TRACE (osip_trace
		  (__FILE__, __LINE__, OSIP_BUG, NULL,
		   "invalid callback type %d\n", type));
      return;
    }
  if (config->msg_callbacks[type] == NULL)
    return;
  config->msg_callbacks[type] (type, tr, msg);
}

void
__osip_kill_transaction_callback (int type, osip_transaction_t * tr)
{
  osip_t *config = tr->config;

  if (type >= OSIP_KILL_CALLBACK_COUNT)
    {
      OSIP_TRACE (osip_trace
		  (__FILE__, __LINE__, OSIP_BUG, NULL,
		   "invalid callback type %d\n", type));
      return;
    }
  if (config->kill_callbacks[type] == NULL)
    return;
  config->kill_callbacks[type] (type, tr);
}

void
__osip_transport_error_callback (int type, osip_transaction_t * tr, int error)
{
  osip_t *config = tr->config;

  if (type >= OSIP_TRANSPORT_ERROR_CALLBACK_COUNT)
    {
      OSIP_TRACE (osip_trace
		  (__FILE__, __LINE__, OSIP_BUG, NULL,
		   "invalid callback type %d\n", type));
      return;
    }
  if (config->tp_error_callbacks[type] == NULL)
    return;
  config->tp_error_callbacks[type] (type, tr, error);
}


int
osip_set_message_callback (osip_t * config, int type, osip_message_cb_t cb)
{
  if (type >= OSIP_MESSAGE_CALLBACK_COUNT)
    {
      OSIP_TRACE (osip_trace
		  (__FILE__, __LINE__, OSIP_ERROR, NULL,
		   "invalid callback type %d\n", type));
      return -1;
    }
  config->msg_callbacks[type] = cb;

  return 0;
}

int
osip_set_kill_transaction_callback (osip_t * config, int type,
				    osip_kill_transaction_cb_t cb)
{
  if (type >= OSIP_KILL_CALLBACK_COUNT)
    {
      OSIP_TRACE (osip_trace
		  (__FILE__, __LINE__, OSIP_ERROR, NULL,
		   "invalid callback type %d\n", type));
      return -1;
    }
  config->kill_callbacks[type] = cb;
  return 0;
}

int
osip_set_transport_error_callback (osip_t * config, int type,
				   osip_transport_error_cb_t cb)
{
  if (type >= OSIP_TRANSPORT_ERROR_CALLBACK_COUNT)
    {
      OSIP_TRACE (osip_trace
		  (__FILE__, __LINE__, OSIP_ERROR, NULL,
		   "invalid callback type %d\n", type));
      return -1;
    }
  config->tp_error_callbacks[type] = cb;
  return 0;
}